From: Francesco Dolcini Date: Fri, 20 Mar 2026 07:30:30 +0000 (+0100) Subject: arm64: dts: ti: am62-verdin: Enable pullup for eMMC data pins X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d5325810814ee995debfa0b6c4a22e0391598bef;p=thirdparty%2Fkernel%2Fstable.git arm64: dts: ti: am62-verdin: Enable pullup for eMMC data pins Verdin AM62 board does not have external pullups on eMMC DAT1-DAT7 pins. Enable internal pullups on DAT1-DAT7 considering: - without a host-side pullup, these lines rely solely on the eMMC device's internal pullup (R_int, 10kohm-150kohm per JEDEC), which may exceed the recommended 50kohm max for 1.8V VCCQ - JEDEC JESD84-B51 Table 200 requires host-side pullups (R_DAT, 10kohm-100kohm) on all data lines to prevent bus floating Fixes: 316b80246b16 ("arm64: dts: ti: add verdin am62") Cc: stable@vger.kernel.org Signed-off-by: Francesco Dolcini Link: https://patch.msgid.link/20260320073032.10427-1-francesco@dolcini.it Signed-off-by: Vignesh Raghavendra --- diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi index 2a7242a2fef8..09840a3b9fe7 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi @@ -572,16 +572,16 @@ /* On-module eMMC */ pinctrl_sdhci0: main-mmc0-default-pins { pinctrl-single,pins = < - AM62X_IOPAD(0x220, PIN_INPUT, 0) /* (Y3) MMC0_CMD */ - AM62X_IOPAD(0x218, PIN_INPUT, 0) /* (AB1) MMC0_CLK */ - AM62X_IOPAD(0x214, PIN_INPUT, 0) /* (AA2) MMC0_DAT0 */ - AM62X_IOPAD(0x210, PIN_INPUT, 0) /* (AA1) MMC0_DAT1 */ - AM62X_IOPAD(0x20c, PIN_INPUT, 0) /* (AA3) MMC0_DAT2 */ - AM62X_IOPAD(0x208, PIN_INPUT, 0) /* (Y4) MMC0_DAT3 */ - AM62X_IOPAD(0x204, PIN_INPUT, 0) /* (AB2) MMC0_DAT4 */ - AM62X_IOPAD(0x200, PIN_INPUT, 0) /* (AC1) MMC0_DAT5 */ - AM62X_IOPAD(0x1fc, PIN_INPUT, 0) /* (AD2) MMC0_DAT6 */ - AM62X_IOPAD(0x1f8, PIN_INPUT, 0) /* (AC2) MMC0_DAT7 */ + AM62X_IOPAD(0x220, PIN_INPUT, 0) /* (Y3) MMC0_CMD */ + AM62X_IOPAD(0x218, PIN_INPUT, 0) /* (AB1) MMC0_CLK */ + AM62X_IOPAD(0x214, PIN_INPUT, 0) /* (AA2) MMC0_DAT0 */ + AM62X_IOPAD(0x210, PIN_INPUT_PULLUP, 0) /* (AA1) MMC0_DAT1 */ + AM62X_IOPAD(0x20c, PIN_INPUT_PULLUP, 0) /* (AA3) MMC0_DAT2 */ + AM62X_IOPAD(0x208, PIN_INPUT_PULLUP, 0) /* (Y4) MMC0_DAT3 */ + AM62X_IOPAD(0x204, PIN_INPUT_PULLUP, 0) /* (AB2) MMC0_DAT4 */ + AM62X_IOPAD(0x200, PIN_INPUT_PULLUP, 0) /* (AC1) MMC0_DAT5 */ + AM62X_IOPAD(0x1fc, PIN_INPUT_PULLUP, 0) /* (AD2) MMC0_DAT6 */ + AM62X_IOPAD(0x1f8, PIN_INPUT_PULLUP, 0) /* (AC2) MMC0_DAT7 */ >; };